Cats, through desert adaptation, require water as a component of their food. They also lack the metabolic pathways to efficiently process plant material, thus defining them as obligate carnivores; their food should consist only of meat, fat, bones, and organs. These are two very simple yet fundamental facts of feline nutrition. A cat is soley designed to hunt, kill, eat, and process meat. Through millions of years of evolution, cats have developed unique characteristics of anatomy, physiology, metabolism, and behavior indicative of obligate carnivores. Many feline diseases such as diabetes,...